2828320782 has 32 divisors (see below), whose sum is σ = 6542629632. Its totient is φ = 798354624.

The previous prime is 2828320777. The next prime is 2828320783. The reversal of 2828320782 is 2870238282.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2828320783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402183 + ... + 409154.

It is an arithmetic number, because the mean of its divisors is an integer number (204457176).

Almost surely, 2^2828320782 is an apocalyptic number.

2828320782 is an abundant number, since it is smaller than the sum of its proper divisors (3714308850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2828320782 is a wasteful number, since it uses less digits than its factorization.

2828320782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811432.

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 2828320782 is about 53181.9591779017. The cubic root of 2828320782 is about 1414.1958383599.

It can be divided in two parts, 2828 and 320782, that added together give a triangular number (323610 = T₈₀₄).

The spelling of 2828320782 in words is "two billion, eight hundred twenty-eight million, three hundred twenty thousand, seven hundred eighty-two".